package com.example.demo.customer;
import com.example.demo.exception.NotFoundException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Objects;

@Service

public class CustomerService {
    private final CustomerRepository customerRepository;
    @Autowired
   public CustomerService(CustomerRepository customerRepository) {
        this.customerRepository = customerRepository;
    }
    List<Customer> getCustomers() {
        return customerRepository.findAll();
    }
    Customer getCustomer(Long id) {
        return customerRepository
                .findById(id)
                .orElseThrow(() -> new NotFoundException("customer" + id+ " 无法找到"));
    }


}
